Leopold kaufman



(No Model.)

L. KAUFMAN.

ANTI FRICTION JOURNAL BEARING. No. 249,948. Patented Nov. 22,1881.

UNITED STATES PATENT ()EEIcE.

LEOPOLD KAUFMAN, OF CINCINNATI, OHIO, ASSIGNOR OF ONE-HALF TO HENRY HELLMAN, OF SAME PLACE.

ANTI-FRICTION JOURNAL-BEARING.

SPECIFICATION forming part of Letters Patent No. 249,948, dated November 22, 1881.

Application med September 17, 1881. N model.)

To all whom it may concern Be it known that I, LEoroLn KAUFMAN, of the city of Cincinnati, county of Hamilton, and State of Ohio, have invented a new and useful Improvement in Anti-Friction J ournal-Bearings, of which the following is a specification.

My invention relates to the class ofjournals, boxes, bearings, and the like which embody anti-friction rollers; and it consists in a novel combination and arrangement of anti-friction rollers and blocks, substantially in the manner hereinafter described and claimed.

My improvement may be applied to journals of any description where the friction is great and where an anti-friction bearing is desirable; but for the purpose of my invention it is sufficient to illustrate it in connection with its application to the axle of a car, its application to otherjournals being obvious from such description.

In the drawings, Figure 1 is a perspective View of a car-axle box embodying my invention as seen from the outside; Fig. 2, a perspective of the same as seen from the inner 2 5 side; Fig. 3, a cross-section of the journal-box, showing thejournal and bearings. Fig. at is a detail View of an upper or lower section ofj0ur Dal-box. Figs. 5, 6, and 7 are detail views of the journal, roller, and separating-block, re-

0 spectively.

Similar letters of reference indicate corresponding parts.

A represents a car-axle.

D and E are inolosing-boxes secured within 5 an axle-box to the track-beams of a car, which boxes are recessed to form the seat and inclosin g-case of a series of alternate rollers and sep arating-blocks, B and O, the flan ge at each end serving to prevent the endwise movement or 0 escapeofsuch roller orlolocks, as wellas to retain a sufficient amount of oil to lubricate all the bearing-surfaces of the rolls, as well upon their ends as upon their peripheries.

B is a series of small rollers, which rest 4 5 closelyin the inclosing-box and afiord an anti I friction support for the axle, being separated from each other by non-rotatin g blocks concave on either side. The axle A is also countersunk to receive the rollers and scparatin gblocks,

its shoulders serving to further support them against endwise movement. The rollers and separating-blocks are thus secured in position without any attachment, and may be removed and replaced independently. The separatingblocks are made of such dimensions that they are supported by the rolls with their inner and outer longitudinal faces slightly out of contact with the journal and containing-box respectively, and thus are relieved from friction on either of these faces while revolving. This is shown in Fig. 3.

In operation the rollers rotate to reduce the friction of the axle, while the rolls and separatlug-blocks also revolve continuously round the inclosing box. In their revolution they pass. through the lubricatingoil retained in the inclosing-box, and the entire bearing-surfaces of the rolls of thejournal and of the blocks, both endwise and peripheral, are thus kept constantly lubricated. A difficulty arising where the rollers have journal-bearings of their own is thus obviated.

I claim- 1. In ajournnl-bearing, the combination of a series ot'independent rollers and independcut non-rotating separating-blocks revolving about the journal, substantially as described.

2. In ajournal-bearing, the combination of a series of independent rollers and non-rotating blocks revolving about the journal, with a recessed box and countersunk journal, substantially as described.

3. In ajournal-bearing,thecombination,\vith the independent rolls and concave separatingblocks, of recessed inclosing-boxes adapted to contain lubricants and apply them to the several bearing-surfaces in their revolution, substantially as described.

4. In combination with the independentrolls of a journal-bearing, the independent non-rotatin g separating-blocks sustained by the rolls out of contact with the bearing-surfaces of the journal and. containing-box respectively.

LEOPOLD K AUFM AN.

X'Vitnesses DANL, KELLY, J OHN OELERING. 

